Rotary motor.



P. J. DARLINGTON.

ROTARY MOTOR.

APPLICATION HLED JULY 21. m4.

Patented Nov. 30, 1915.

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PHILIP J. nnnnrneron, or rennrron'n, oonnnorron'rf Y ROTARY MOTOR.

memes.

To all whom it may concern Be it known that l, PHILIP J. DARLINGTON, a citizen of the United States,residing at Hartford, in the county of 'Hartford and State of Connecticut, have invented new and usefulImprovements in Rotary Motors, of which the following is a specification.

This invention relates to rotary motors of the class ordinarily employed for driving boiler flue cleaners.

In the accompanying drawings Figure 1 1s a side view, partly in Section' Fig. 2 is a cross sectional view on line '22' of Fig. 1. Fig. 3 is a cross sectional view on line 3-3 of Fig. 1. Fig. e is a front face view of the key. Fig.5 is an end elevation of the key projected from Fig. i. I

The shell 1 has an opening of large diameter'at its front end to receive a rotary motor body 2 therethrough. The eXternal and internal diameter of the shell are reduced at its rearward end, which is internally threaded. v v f The motor herein shown is of the usual eccentric construction, but the type or style of motor and its details of construction are immaterial t0 thepresent invention.

The drivingshaft 8 of the motor has a screw threaded extension 4 to receive a driven tool.

A hose connector 5, screw ,threaded'into the shell 1 is adapted to-receive the end of a flexible pipe or hose 6, by means of which the motor may be hel'd against turning and advanced through the-tube being cleaned. The connector 5 is circumferentially grooved or toothed on its inner surfacejtogrip and hold the hose 6.

A tubular hose wedge 7, circumferentially grooved or toothed on its outer surface, is forced inside the hose to tighten it'in the connector 5.

A flange 8, on the wedge 7, bearing against the inner end of the connector 5, prevents the wedge from pulling through the connector, and forms an interlock between the inside surface of the connector 5 and the out side surface of the wedge 7, coiiperating to prevent the hose 6 from being pulled out.

The forward end of the wedge 7 bears against the rear end face of the body 2, and thereby forces that body forward in the shell 1 as the latter is screwed on to the connector 5.

Radial openings 9 are provided in the Specification of Letters intent.

Patented Nov. 1:915.

Application filed July 27, 1914. Serial 1510. $53,521.

front end of wedge .7 to allow the passage of motive fluid from the hose 6, through wedge 7 to the motor cylinder.

Animportantfeature of this invention is the means for removably interlocking the body and the shell to-keep them from turning relative to each other when in use, while permitting the parts to be readily assembled and disassembled when desired. A key 10 is seated in a cross slot. 11 in the motor body 2, and projects outwardly through an aperture 12 in; the. shell 1. The bottom of the slot 11 and'of the key are herein shownto be are shaped (Fig. 3), which facilitates making the slotlwith a milling cutter; but this and other features may be modified as conditions may require. The thickness of the key 10 corresponds with the width of the slot 11 in the body and the aperture 12 in the shell. The outer contour of the key 10 is partly cylindrical, in two steps 13 and 14, of different diameters, coinciding with they outer and inner diameters, respectively, of the shell 1. When the parts. are in their locked position, as shown in Fig.1, the surface 14': ofthe key'underlies a portion of the V shell adjacent to the openingv 12, while the shoulder 15 of the'key' abuts against the forward under the edge of the shell, and' thereby locking the shell and body together. The body and shell are secured in this relative position by screwing the connector 5 into the end of the shell against the rearward end of thebody 2, in which position the parts are retained by the reactive eifect of driving the motor. 1

To disassemble the motor, the connector 5 is unscrewed from the shell and the body 2 is pushed backwardly relative to the shell far enough to bring the key 10 into coincidence with the aperture 12 of the shell, out of which the key may then be pushed or driven, thereby allowing the body 2 to be withdrawn from the shell. Figs. 1 and 3 show two of these keys, employed on opposite sides of the body. The number and size of the keys used may obviously be adapted to the circumstances or requirements of each case.

In operation the motor is held by the'hose 6, and pushed through the tubing. The turning effect of the motor should be taken into account in designing and making it. The threads of the extension 4 and of the connector 5 should be of thesame hand. In the present instance they are both right handed, providing for the use of a right handed motor, the driving of which tends to screw the cleaning head more tightly upon the extension 4 and also tends to keep the shell I screwed more tightly upon the connector 5, thus keeping the latter screwed tightly against the rearward end ofthe body and thereby holding the key tightly in I claim as my invention l. A rotary motor having a shell with a lock receiving opening, a cylinder with a lock receiving recess, loosely fitting within the shell, and a lock for holding the cylinder from forward displacement in the shell adapted to be inserted from the exterior through the opening in the shell into the recess in the cylinder when the parts are out of normal operative relation and extending under and held from outward movement by the shell when the parts are in normal relation. I

2. A rotary motor having a shell with a lock receiving opening, a cylinder with a lock receiving recess, fitting within the shell, and a lock designed to be inserted from the exteriorthrough the opening in the shell into the recess in the cylinder when the parts are out of normal operative relation and to be held in place by the shell and prevent forward displacement of the cylinder when the parts are in normal relation.

3. A rotary motor having a shell with a lock receiving opening, a cylinder with a lock' receiving recess, movable longitudinally within the shell, a lock designed to be inserted from the exterior through the opening in the shell into the recess in the cylin- Copies of this patentmay be obtained for 'five cents each, by addressing derwhen the parts are longitudinally out of normal operative relation and to be held in place by the shell and prevent forward displacement of the cylinder when the parts are in normal relation, and removable means for preventing the rearward displacement of the cylinder in the shell.

4. In a rotary motor, a shell, a motor body within said shell and a removable transverse key extending through the wall of said shell into a seat in said motor body, said key being formed on its outer surface with cylindrical portions conforming respectively to the outer and inner surfaces of said shell, and with the smaller cylindrical portion of the key underlying the inner surface of said shell.

5. A rotary motorhaving a body containing a longitudinally extending piston chamber and a transversely extending lock recess, a shell upon the body with a lock receiving opening that is out of registry with the lock recess in the body when the parts are in normal relation, and a lock designed to be inserted into the body through the opening in the shell when the body and shell are out of normal relation and to lock said parts together when they are in normal relation.

6. A rotary motor having a body containing a longitudinally extending piston chamber and a transversely extending lock recess, a shell upon the body with a lock receiving opening, a lock designed to be inserted through the shell into the body when the parts are out of normal relation and to lock the parts together when they are in normal relation, and a hose connection inserted into the shell'and butting against the body for holding the parts in normal relation.

' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses this 24th day of July, 1914.

PHILIP J. DARLINGTON. Witnesses SIDNEY S. GRo'rTA, CAROLINE M. BRECKLE.

the Commissioner of Pat nts.

Washington, I). 0. 

